JF220 lets you have “secure area” which can be accessed only by a fingerprint or a password which were set in advance and “general area” which can be accessed by anyone else who “owns” this thumb drive physically.

Now, let’s say that you lost this drive with files inside the “secure area”.
You may think it wouldn’t be possible to retrieve those “important” files because they are inside the “SECURE” area.
But, unfortunately, anyone who “accidentally” owns your JF220 can restore(or recover) those files by re-partitioning the areas.
(i.e “4G-secure + 4G-general” -> “50M-secure + 7.5G-general”)

You can re-partition areas by the software in the installation CD.

[work around]
You have to encrypt file by file when you write files in “secure area”

With a shared-key authentication process the AP sends challenge text to the client in clear text, and then the client encrypts it and sends it back to the AP. If someone is sniffing or monitoring your transmission while this was happening, they could intercept a sample of plain text with its corresponding encrypted text. This gives the hacker a tremendous head start when attempting to break your encryption key, because all of the information to perform the decryption is contained in these two pieces of data.

Conversely, the open network authentication system doesn’t pass on any information to the client in plain text, just the corresponding encrypted text. By removing that information, the process of breaking your encryption key is far more difficult. Since both authentication methods can use WEP, an open system is the preferred encryption method to employ. Because it doesn’t pass on any additional data about the key, it’s considered to be more secure. LOL